High-frequency monitoring of nitrogen and phosphorus response in three rural catchments to the end of the 2011-2012 drought in England

Hydrology and Earth System Sciences

Volumn 18, Issue 9, 2014, Pages 3429-3448

  Outram, F N ^a   Lloyd, C E M ^b   Jonczyk, J ^c   McW H Benskin, C ^d   Grant, F ^e   Perks, M T ^f   Deasy, C ^d,f   Burke, S P ^g   Collins, A L ^h,i   Freer, J ^b   Haygarth, P M ^d   Hiscock, K M ^a   Johnes, P J ^b   Lovett, A L ^a  

^a UNIVERSITY OF EAST ANGLIA   (United Kingdom)

^b UNIVERSITY OF BRISTOL   (United Kingdom)

^c NEWCASTLE UNIVERSITY   (United Kingdom)

^d LANCASTER UNIVERSITY   (United Kingdom)

^e ADAS BOXWORTH   (United Kingdom)

^f DURHAM UNIVERSITY   (United Kingdom)

^g BRITISH GEOLOGICAL SURVEY   (United Kingdom)

^h ROTHAMSTED RESEARCH   (United Kingdom)

ⁱ UNIVERSITY OF SOUTHAMPTON   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

AGRICULTURE; DROUGHT; ENVIRONMENTAL MANAGEMENT; LAND USE; NITRATES; NITROGEN; NUTRIENTS; PHOSPHORUS; RAIN; RIVERS; RUNOFF; STORMS;

AGRICULTURAL SOURCES; DEMONSTRATION TESTS; ENVIRONMENTAL MANAGERS; EXTREME WEATHER EVENTS; HIGH-FREQUENCY MONITORING; MITIGATION MEASURES; NITROGEN AND PHOSPHORUS; TOTAL REACTIVE PHOSPHORUS;

CATCHMENTS;

ANTECEDENT CONDITIONS; ARABLE LAND; CATCHMENT; DROUGHT; GRASSLAND; HYSTERESIS; LAND USE; NITROGEN; PHOSPHORUS; POLLUTANT; STREAM; TRIBUTARY; WEATHER;

AVON RIVER [ENGLAND]; CUMBRIA; EDEN RIVER; ENGLAND; NORFOLK [ENGLAND]; UNITED KINGDOM; WENSUM RIVER;

EID: 84949116328     PISSN: 10275606     EISSN: 16077938     Source Type: Journal    
DOI: 10.5194/hess-18-3429-2014     Document Type: Article

References (91)

1. Allen, D. J., Darling, W. G., Davies, J., Newell, A. J., Gooddy, D. C., and Collins, A. L.: Groundwater conceptual models: implications for evaluating diffuse pollution mitigation measures, Quart. J. Eng. Geol. Hydrogeol., 47, 65–80, 2014.
2. Ballantine, D. J., Walling, D. E., Collins, A. L., and Leeks, G. J. L.: The content and storage of phosphorus in fine-grained channel bed sediment in contrasting lowland agricultural catchments in the UK, Geoderma, 151, 141–149, 2009.
3. Billen, G., Silvestre, M., Grizzetti, B., Leip, A., Garnier, J., Voss, M., Howarth, R., Bouraoui, F., Lepistö, A., Kortelainen, P., Johnes, P., Curtis, C., Humborg, C., Smedberg, E., Kaste, Ø., Ganeshram, R., Beusen, A., and Lancelot, C.: Nitrogen flows from European regional watersheds, in: The European Nitrogen Assessment: Sources, Effects and Policy Perspectives, edited by: Sutton, M. A., Howard, C. M., Erisman, J. W., Billen, G., Grennfelt, P., van Grinsven, H., and Grizzetti, B., Cambridge University Press, Cambridge, UK, 271–297, 2011.
4. Boar, R. R., Lister, D. H., and Clough, W. T.: Phosphorus loads in a small groundwater-fed river during the 1989–1992 East An-glian drought, Water Res., 29, 2167–2173, doi:10.1016/0043-1354(95)00034-I, 1995.
5. Bowes, M. J., House, W. A., Hodgkinson, R. A., and Leach, D. V.: Phosphorus-discharge hysteresis during storm events along a river catchment: the River Swale, UK, Water Res., 39, 751– 762, doi:10.1016/j.watres.2004.11.027, 2005.
6. Burt, T. P., Arkell, B. P., Trudgill, S. T., and Walling, D. E.: Stream nitrate levels in a small catchment in south west England over a period of 15 years (1970–1985), Hydrol. Process., 2, 267–284, doi:10.1002/hyp.3360020307, 1988.
7. Butcher, A., Lawrence, A., Mansour, M., Burke, S., Ingram, J., and Merrin, P.: Investigation of Rising Nitrate Concentrations in Groundwater in the Eden Valley, Cumbria, British Geological Survey Keyworth, Nottingham, 2008.
8. Chanat, J. G., Rice, K. C., and Hornberger, G. M.: Consistency of patterns in concentration-discharge plots, Water Resour. Res., 38, 22-21-22-10, doi:10.1029/2001WR000971, 2002.
9. Cherry, K. A., Shepherd, M., Withers, P. J. A., and Mooney, S. J.: Assessing the effectiveness of actions to mitigate nutrient loss from agriculture: a review of methods, Sci. Total Environ., 406, 1–23, doi:10.1016/j.scitotenv.2008.07.015, 2008.
10. Collins, A., Ohandja, D. G., Hoare, D., and Voulvoulis, N.: Implementing the water framework directive: a transition from established monitoring networks in England and Wales, Environ. Sci. Policy, 17, 49–61, doi:10.1016/j.envsci.2011.11.003, 2012.
11. Collins, A. L., Walling, D. E., Stroud, R. W., Robson, M., and Peet, L. M.: Assessing damaged road verges as a suspended sediment source in the Hampshire Avon catchment, southern United Kingdom, Hydrol. Process., 24, 1106–1122, doi:10.1002/hyp.7573, 2010.
12. Cooper, R. J., Rawlins, B. G., Lézé, B., Krueger, T., and Hiscock, K. M.: Combining two filter paper-based analytical methods to monitor temporal variations in the geochemical properties of fluvial suspended particulate matter, Hydrol. Process., doi:10.1002/hyp.9945, 2013.
13. De la Cueva, P.: Identification of Agricultural Areas in Europe Subject to Different Types of Field Drainage. MSc Thesis, School of Applied Sciences, National Soil Resources Institute, Cranfield University, Silsoe, UK, 2006.
14. Deasy, C., Heathwaite, A. L. H., Brazier, R. E., and Hodgkinson, R.: Pathways of runoff and sediment transfer in small agricultural catchments, Hydrol. Process., 23, 1349–1358, doi:10.1002/hyp.7257, 2009a.
15. Deasy, C., Quinton, J. N., Silgram, M., Stoate, C., Jackson, R., Stevens, C. J., and Bailey, A. P.: Mitigation Options for Phosphorus and Sediment: Reducing Pollution in Runoff from Arable Fields, The Environmentalist, 180, 12–17, 2010.
16. Deasy, C., Quinton, J. N., Silgram, M. S., Jackson, R., Bailey, A. P., and Stevens, C. J.: Mitigation options for sediment and phosphorus losses from winter-sown arable crops, J. Environ. Qual., 38, 2121–2130, doi:10.2134/jeq2009.0028, 2009b.
17. Di, H. J. and Cameron, K. C.: Nitrate leaching in temperate agroe-cosystems: sources, factors and mitigating strategies, Nutr. Cycl. Agroecosyst., 64, 237–256, doi:10.1023/A:1021471531188, 2002.
18. Djodjic, F., Ulén, B., and Bergström, L.: Temporal and spatial variations of phosphorus losses and drainage in a structured clay soil, Water Res., 34, 1687–1695, doi:10.1016/S0043-1354(99)00312-7, 2000.
19. Drewry, J. J., Newham, L. T. H., and Croke, B. F. W.: Suspended sediment, nitrogen and phosphorus concentrations and exports during storm-events to the Tuross estuary, Australia, J. Environ. Manage., 90, 879–887, doi:10.1016/j.jenvman.2008.02.004, 2009.
20. Dworak, T., Gonzalez, C., Laaser, C., and Interwies, E.: The need for new monitoring tools to implement the WFD, Environ. Sci. Policy, 8, 301–306, doi:10.1016/j.envsci.2005.03.007, 2005.
21. Eder, A., Exner-Kittridge, M., Strauss, P., and Blöschl, G.: Re-suspension of bed sediment in a small stream – results from two flushing experiments, Hydrol. Earth Syst. Sci., 18, 1043–1052, doi:10.5194/hess-18-1043-2014, 2014.
22. Eder, A., Strauss, P., Krueger, T., and Quinton, J. N.: Comparative calculation of suspended sediment loads with respect to hysteresis effects (in the Petzenkirchen catchment, Austria), J. Hydrol., 389, 168–176, doi:10.1016/j.jhydrol.2010.05.043, 2010.
23. Edwards, A. C. and Withers, P. J. A.: Transport and delivery of suspended solids, nitrogen and phosphorus from various sources to freshwaters in the UK, J. Hydrol., 350, 144–153, doi:10.1016/j.jhydrol.2007.10.053, 2008.
24. Evans, C. and Davies, T. D.: Causes of concentration/discharge hysteresis and its potential as a tool for analysis of episode hydrochemistry, Water Resour. Res., 34, 129–137, doi:10.1029/97WR01881, 1998.
25. Evans, D. J. and Johnes, P. J.: Physico-chemical controls on phosphorus cycling in two lowland streams – Part 1: The water column, Sci. Total Environ., 329, 145–163, 2004.
26. Evans, D. J., Johnes, P. J., and Lawrence, D. S.: Physico-chemical controls on phosphorus cycling in two lowland streams. Part 2: – The sediment phase, Sci. Total Environ., 329, 165–182, doi:10.1016/j.scitotenv.2004.02.023, 2004.
27. Ferrant, S., Laplanche, C., Durbe, G., Probst, A., Dugast, P., Du-rand, P., Sanchez-Perez, J. M., and Probst, J. L.: Continuous measurement of nitrate concentration in a highly event-responsive agricultural catchment in south-west of France: is the gain of information useful?, Hydrol. Process., 27, 1751–1763, doi:10.1002/hyp.9324, 2013.
28. Foster, I. D. L. and Walling, D. E.: The effects of the 1976 drought and autumn rainfall on stream solute levels, Earth Surf. Proc., 3, 393–406, doi:10.1002/esp.3290030407, 1978.
29. Gooddy, D. C., Darling, W. G., Abesser, C., and Lapworth, D. J.: Using chlorofluorocarbons (CFCs) and sulphur hexafluoride (SF6) to characterise groundwater movement and residence time in a lowland Chalk catchment, J. Hydrol., 330, 44–52, doi:10.1016/j.jhydrol.2006.04.011, 2006.
30. Grizzetti, B., Bouraoui, F., Billen, G., van Grinsven, H., Car-doso, A. C., Thieu, V., Garnier, J., Curtis, C., Howarth, R. W., and Johnes, P. J: Nitrogen as a threat to European water quality, in: European Nitrogen Assessment, edited by: Sutton, M. A., Howard, C. M., Erisman, J. W., Billen, G., Bleeker, A., Grennfelt, P., van Grinsven, H., and Grizzetti, B., Cambridge University Press, Cambridge, UK, 379–404, 2011.
31. Halliday, S., Skeffington, R., Bowes, M., Gozzard, E., Newman, J., Loewenthal, M., Palmer-Felgate, E., Jarvie, H., and Wade, A.: The Water Quality of the River Enborne, UK: Observations from High-Frequency Monitoring in a Rural, Lowland River System, Water, 6, 150–180, 2014.
32. Hansen, E. M., Eriksen, J., and Vinther, F. P.: Catch crop strategy and nitrate leaching following grazed grass-clover, Soil Use Manage., 23, 348–358, doi:10.1111/j.1475-2743.2007.00106.x, 2007.
33. Haygarth, P. M., Warwick, M. S., and House, W. A.: Size distribution of colloidal molybdate reactive phosphorus in river waters and soil solution, Water Res., 31, 439–448, doi:10.1016/S0043-1354(96)00270-9, 1997.
34. Haygarth, P., Turner, B. L., Fraser, A., Jarvis, S., Harrod, T., Nash, D., Halliwell, D., Page, T., and Beven, K.: Temporal variability in phosphorus transfers: classifying concentration-discharge event dynamics, Hydrol. Earth Syst. Sci., 8, 88–97, doi:10.5194/hess-8-88-2004, 2004.
35. Haygarth, P. M., Wood, F. L., Heathwaite, A. L., and Butler, P. J.: Phosphorus dynamics observed through increasing scales in a nested headwater-to-river channel study, Sci. Total Environ., 344, 83–106, 2005.
36. Haygarth, P. M., Page, T. J. C., Beven, K. J., Freer, J., Joynes, A., Butler, P., Wood, G. A., and Owens, P. N.: Scaling up the phosphorus signal from soil hillslopes to headwater catchments, Freshwater Biol., 57, 7–25, doi:10.1111/j.1365-2427.2012.02748.x, 2012.
37. Heathwaite, A. L., Burke, S. P., and Bolton, L.: Field drains as a route of rapid nutrient export from agricultural land receiving biosolids., Sci. Total Environ., 365, 33–46, 2006.
38. Hiscock, K. M.: The influence of pre-Devensian glacial deposits on the hydrogeochemistry of the chalk aquifer system of north Norfolk, UK., J. Hydrol., 144, 335–369, 1993.
39. Hiscock, K. M., Dennis, P. F., Saynor, P. R., and Thomas, M. O.: Hydrochemical and stable isotope evidence for the extent and nature of the Chalk aquifer of north Norfolk, UK, J. Hydrol., 180, 79–107, 1996.
40. Hively, W. D., Bryant, R. B., and Fahey, T. J.: Phosphorus concentrations in overland flow from diverse locations on a New York dairy farm, J. Environ. Qual., 34, 1224–1233, doi:10.2134/jeq2004.0116, 2005.
41. Hooker, K. V., Coxon, C. E., Hackett, R., Kirwan, L. E., O’Keeffe, E., and Richards, K. G.: Evaluation of Cover Crop and Reduced Cultivation for Reducing Nitrate Leaching in Ireland, J. Environ. Qual., 37, 138–145, doi:10.2134/jeq2006.0547, 2008.
42. House, W. A. and Warwick, M. S.: Hysteresis of the solute concentration/discharge relationship in rivers during storms, Water Res., 32, 2279–2290, doi:10.1016/S0043-1354(97)00473-9, 1998.
43. Ide, J. i., Haga, H., Chiwa, M., and Otsuki, K.: Effects of antecedent rain history on particulate phosphorus loss from a small forested watershed of Japanese cypress (Chamaecyparis obtusa), J. Hydrol., 352, 322–335, doi:10.1016/j.jhydrol.2008.01.012, 2008.
44. Jackson, B. M., Wheater, H. S., Mathias, S. A., McIntyre, N., and Butler, A. P.: A simple model of variable residence time flow and nutrient transport in the chalk, J. Hydrol., 330, 221–234, doi:10.1016/j.jhydrol.2006.04.045, 2006.
45. Jackson, B. M., Browne, C. A., Butler, A. P., Peach, D., Wade, A. J., and Wheater, H. S.: Nitrate transport in Chalk catchments: monitoring, modelling and policy implications, Environ. Sci. Policy, 11, 125–135, doi:10.1016/j.envsci.2007.10.006, 2008.
46. Jarvie, H. P., Neal, C., Williams, R. J., Neal, M., Wickham, H. D., Hill, L. K., Wade, A. J., Warwick, A., and White, J.: Phosphorus sources, speciation and dynamics in the lowland eu-trophic River Kennet, UK, Sci. Total Environ., 282–283, 175–203, doi:10.1016/S0048-9697(01)00951-2, 2002.
47. Jarvie, H. P., Withers, P. J. A., Bowes, M. J., Palmer-Felgate, E. J., Harper, D. M., Wasiak, K., Wasiak, P., Hodgkinson, R. A., Bates, A., Stoate, C., Neal, M., Wickham, H. D., Har-man, S. A., and Armstrong, L. K.: Streamwater phosphorus and nitrogen across a gradient in rural–agricultural land use intensity, Agr. Ecosyst. Environ., 135, 238–252, doi:10.1016/j.agee.2009.10.002, 2010.
48. Johnes, P. J. and Burt, T. P.: Nitrate in surface waters, in: Nitrate: processes, patterns and management, edited by: Burt, T. P., Heathwaite, A. L., and Trudgill, S. T., 269–317, 1993.
49. Johnes, P. J.: Meeting ecological restoration targets in European Waters: a challenge for animal agriculture, in: Redesigning Animal Agriculture: The Challenge for the 21st Century, edited by: SSwain, D. L., Charmley, E., Steel, J., and Coffey, S., CAB International, Wallingford, 185–203, 2007a.
50. Johnes, P. J.: Uncertainties in annual riverine phosphorus load estimation: impact of load estimation methodology, sampling frequency, baseflow index and catchment population density, J. Hydrol., 332, 241–258, doi:10.1016/j.jhydrol.2006.07.006, 2007b.
51. Jordan, P., Arnscheidt, A., McGrogan, H., and McCormick, S.: Characterising phosphorus transfers in rural catchments using a continuous bank-side analyser, Hydrol. Earth Syst. Sci., 11, 372– 381, doi:10.5194/hess-11-372-2007, 2007.
52. Jordan, P., Arnscheidt, J., McGrogan, H., and McCormick, S.: High-resolution phosphorus transfers at the catchment scale: the hidden importance of non-storm transfers, Hydrol. Earth Syst. Sci., 9, 685–691, doi:10.5194/hess-9-685-2005, 2005.
53. Jordan, P., and Cassidy, R.: Technical Note: Assessing a 24/7 solution for monitoring water quality loads in small river catchments, Hydrol. Earth Syst. Sci., 15, 3093-3100, doi: 10.5194/hess-15-3093-2011, 2011.
54. Jose, P.: Long-term nitrate trends in the river trent and four major tributaries, Regul. River, 4, 43–57, doi:10.1002/rrr.3450040105, 1989.
55. Kirchner, J. W., Feng, X. H., Neal, C., and Robson, A. J.: The fine structure of water-quality dynamics: the (high-frequency) wave of the future, Hydrol. Process., 18, 1353–1359, doi:10.1002/Hyp.5537, 2004.
56. Laubel, A., Kronvang, B., Larsen, S. E., Pedersen, M. L., and Svendsen, L. M.: Bank erosion as a source of sediment and phosphorus delivery to small Danish streams. In: The role of erosion and sediment transport in nutrient and contaminant transfer, Wallingford, UK, 75–82, 2000.
57. Lawler, D. M., Petts, G. E., Foster, I. D. L., and Harper, S.: Turbidity dynamics during spring storm events in an urban headwater river system: the Upper Tame, West Midlands, UK, Sci. Total Environ., 360, 109–126, doi:10.1016/j.scitotenv.2005.08.032, 2006.
58. Leip, A., Achermann, B., Billen, G., Bleeker, A., Bouwman, A., de Vries, W., Dragosits, U., Doring, U., Fernall, D., Geupel, M., Herolstab, J., Johnes, P. J., Le Gall, A. C., Monni, S., Neve-ceral, R., Orlandini, L., Prud’homme, M., Reuter, H., Simpson, D., Seufert, G., Spranger, T., Sutton, M., van Aardenne, J., Voss, M., and Winiwarter, W: Integrating nitrogen fluxes at the European scale, in: European Nitrogen Assessment, edited by: Sutton, M. A., Howard, C. M., Erisman, J. W., Billen, G., Bleeker, A., Grennfelt, P., van Grinsven, H., and Grizzetti, B., Cambridge University Press, Cambridge, UK, 345–376, 2011.
59. Lewis, M. A. and Gooddy, D.: Borehole drilling and sampling in the Wensum Demonstration Test Catchment (Draft), British Geological Survey Commissioned Report, CR/11/162, 38, 2014.
60. Liefferink, D., Wiering, M., and Uitenboogaart, Y.: The EU water framework directive: a multi-dimensional analysis of implementation and domestic impact, Land Use Policy, 28, 712–722, doi:10.1016/j.landusepol.2010.12.006, 2011.
61. Lloyd, C. E. M., Freer, J. E., Collins, A. L., Johnes, P. J., and Jones, J. I.: Methods for detecting change in hydrochemical time series in response to targeted pollutant mitigation in river catchments, J. Hydrol., 514, 297–312, doi:10.1016/j.jhydrol.2014.04.036, 2014.
62. LWEC: Demonstration Test Catchments: available at: http://www.lwec.org.uk/activities/demonstration-test-catchments, last access: 13 January 2013.
63. Marsh, T. and Parry, S.: An overview of the 2010-12 drought and its dramatic termination, NERC/Centre for Ecology & Hydrology, Wallingford, UK, 4, 2012.
64. Marsh, T. J. and Hannaford, J.: Hydrometric Register. Hydrological Data UK Series., Centre for Ecology and Hydrology, Wallingford, 2008.
65. McKee, L., Eyre, B., and Hossain, S.: Intra-and interannual export of nitrogen and phosphorus in the subtropical Richmond River catchment, Australia, Hydrol. Process., 14, 1787–1809, doi:10.1002/1099-1085(200007)14:10<1787::AID-HYP42>3.0.CO;2-Z, 2000.
66. Melland, A. R., Mc Caskill, M. R., White, R. E., and Chapman, D. F.: Loss of phosphorus and nitrogen in runoff and subsurface drainage from high and low input pastures grazed by sheep in southern Australia, Soil Res., 46, 161–172, doi:10.1071/SR07084, 2008.
67. Melland, A. R., Mellander, P. E., Murphy, P. N. C., Wall, D. P., Mechan, S., Shine, O., Shortle, G., and Jordan, P.: Stream water quality in intensive cereal cropping catchments with regulated nutrient management, Environ. Sci. Policy, 24, 58–70, doi:10.1016/j.envsci.2012.06.006, 2012.
68. Mellander, P.-E., Melland, A. R., Jordan, P., Wall, D. P., Murphy, P. N. C., and Shortle, G.: Quantifying nutrient transfer pathways in agricultural catchments using high temporal resolution data, Environ. Sci. Policy, 24, 44–57, doi:10.1016/j.envsci.2012.06.004, 2012.
69. Moliere, D. R., Evans, K. G., Saynor, M. J., and Erskine, W. D.: Estimation of suspended sediment loads in a seasonal stream in the wet-dry tropics, Northern Territory, Australia, Hydrol. Process., 18, 531–544, doi:10.1002/hyp.1336, 2004.
70. O’Connor, E. M., McConnell, C., Lembcke, D., and Winter, J. G.: Estimation of total phosphorus loads for a large, flashy river of a highly developed watershed–seasonal and hysteresis effects, J. Great Lakes Res., 37, 26–35, doi:10.1016/j.jglr.2011.04.004, 2011.
71. Ockenden, M. C., Deasy, C., Quinton, J. N., Bailey, A. P., Surridge, B., and Stoate, C.: Evaluation of field wetlands for mitigation of diffuse pollution from agriculture: sediment retention, cost and effectiveness, Environ. Sci. Pol., 24, 110–119, doi:10.1016/j.envsci.2012.06.003, 2012.
72. Ockenden, M. C., Deasy, C., Quinton, J. N., Surridge, B., and Stoate, C.: Keeping agricultural soils out of rivers: sediment and nutrient retention in field wetlands created for mitigation of diffuse pollution from agriculture, J. Environ. Manage., 13, 54–62, doi:10.1016/j.jenvman.2014.01.015, 2014.
73. Oeurng, C., Sauvage, S., and Sanchez-Perez, J. M.: Temporal variability of nitrate transport through hydrological response during flood events within a large agricultural catchment in south-west France, Sci. Total Environ., 409, 140–149, doi:10.1016/j.scitotenv.2010.09.006, 2010.
74. Owen, G. J., Perks, M. T., Benskin, C. M. H., Wilkinson, M. E., Jonczyk, J., and Quinn, P. F.: Monitoring agricultural diffuse pollution through a dense monitoring network in the River Eden Demonstration Test Catchment, Cumbria, UK, Area, 44, 443– 453, doi:10.1111/j.1475-4762.2012.01107.x, 2012.
75. Palmer-Felgate, E. J., Jarvie, H. P., Williams, R. J., Mortimer, R. J. G., Loewenthal, M., and Neal, C.: Phosphorus dynamics and productivity in a sewage-impacted lowland chalk stream, J. Hydrol., 351, 87–97, doi:10.1016/j.jhydrol.2007.11.036, 2008.
76. Premrov, A., Coxon, C. E., Hackett, R., Kirwan, L., and Richards, K. G.: Effects of over-winter green cover on groundwater nitrate and dissolved organic carbon concentrations beneath tillage land, Sci. Total Environ., 438, 144–153, doi:10.1016/j.scitotenv.2012.08.043, 2012.
77. Prior, H. and Johnes, P. J.: Regulation of surface water quality in a Cretaceous Chalk catchment, UK: an assessment of the relative importance of instream and wetland processes, Sci. Total Environ., 282–283, 159–174, doi:10.1016/S0048-9697(01)00950-0, 2002.
78. Robson, A. and Reed, D.: Flood estimation handbook – FEH CD-ROM 3, Institute of Hydrology, Wallingford, 1999.
79. Rozemeijer, J. C. and Broers, H. P.: The groundwater contribution to surface water contamination in a region with intensive agricultural land use (Noord-Brabant, the Netherlands), Environ. Pollut., 148, 695–706, doi:10.1016/j.envpol.2007.01.028, 2007.
80. Saxton, K. E., and Lenz, A. T.: Antecedent retention indexes predict soil moisture, Proceedings of American Society of Civil Engineering, J. Hydraul. Division, 93, 223–241, 1967.
81. Scholefield, D., Le Goff, T., Braven, J., Ebdon, L., Long, T., and Butler, M.: Concerted diurnal patterns in riverine nutrient concentrations and physical conditions, Sci. Total Environ., 344, 201–210, doi:10.1016/j.scitotenv.2005.02.014, 2005.
82. Siwek, J., Siwek, J.P., Zelazny, M. Environmental and land use factors affecting phosphate hysteresis patterns of stream water during flood events (Carpathian Foothills, Poland), Hydrological Processes, Volume 27, Issue 25, 15 December 2013, Pages 3674-3684. doi:10.1002/hyp.9484
83. Soley, R. W. N., Power, T., Mortimore, R. N., Shaw, P., Dottridge, J., Bryan, G., and Colley, I.: Modelling the hydrogeol-ogy and managed aquifer system of the Chalk across southern England, Geol. Soc., Lond., Special Publications, 364, 129–154, doi:10.1144/sp364.10, 2012.
84. Stutter, M. I., Langan, S. J., and Cooper, R. J.: Spatial contributions of diffuse inputs and within-channel processes to the form of stream water phosphorus over storm events, J. Hydrol., 350, 203–214, doi:10.1016/j.jhydrol.2007.10.045, 2008.
85. Wade, A. J., Palmer-Felgate, E. J., Halliday, S. J., Skeffington, R. A., Loewenthal, M., Jarvie, H. P., Bowes, M. J., Greenway, G. M., Haswell, S. J., Bell, I. M., Joly, E., Fallatah, A., Neal, C., Williams, R. J., Gozzard, E., and Newman, J. R.: Hydrochemical processes in lowland rivers: insights from in situ, high-resolution monitoring, Hydrol. Earth Syst. Sci., 16, 4323–4342, doi:10.5194/hess-16-4323-2012, 2012.
86. Wilkinson, M. E., Quinn, P. F., and Welton, P.: Runoff management during the September 2008 floods in the Belford catchment, Northumberland, J. Flood Manage., 3, 285–295, 2010.
87. Wilkinson, M. E., Quinn, P. F., and Hewett, C. J. M.: The Floods and Agriculture Risk Matrix: a decision support tool for effectively communicating flood risk from farmed landscapes, Int. J. River Basin Manage., 11, 237–252, doi:10.1080/15715124.2013.794145, 2013.
88. Wilkinson, M. E., Quinn, P. F., Barber, N. J., and Jonczyk, J.: A framework for managing runoff and pollution in the rural landscape using a Catchment Systems Engineering approach, Sci. Total Environ., 468–469, 1245–1254, doi:10.1016/j.scitotenv.2013.07.055, 2014.
89. Withers, P. J. A. and Lord, E. I.: Agricultural nutrient inputs to rivers and groundwaters in the UK: policy, environmental management and research needs, Sci. Total Environ., 282–283, 9–24, 2002.
90. Withers, P. J. A., Jarvie, H. P., Hodgkinson, R. A., Palmer-Felgate, E. J., Bates, A., Neal, M., Howells, R., Withers, C. M., and Wickham, H. D.: Characterization of phosphorus sources in rural watersheds, J. Environ. Qual., 38, 1998–2011, doi:10.2134/jeq2008.0096, 2009.
91. Yates, C. A. and Johnes, P. J.: Nitrogen speciation and phosphorus fractionation dynamics in a lowland Chalk catchment, Sci. Total Environ., 444, 466–479, doi:10.1016/j.scitotenv.2012.12.002, 2013.